Door-lock



UNITED STATES PATENT OFFICE.

J. KINZER, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO C. ADAMS, OFPITTSBURG, PENNSYLVANIA.

DOOR-LOCK.

Specification of Letters Patent No. 30,654, dated November 13, 1860.

To all whom it may concern:

Be it known that I, JACOB Kiivznn, of the city of Pittsburg, in theState of Pennsyl1 Vania, have invented certain new and usefulImprovements in the Manufacture of Door- Locks; and I do hereby declarethe following to be a full, clear, and exact description of the saine,reference being had to the ac companying drawings, making a part of thisspecification, in which-h Figure l represents a perspective view of ainortise lock and its keeper, and Fig. 2 represents a face view of thelatch bolt.

The nature of niy invention consists more particularly in the forin, andconstruction of the latch bolt of the lock, for the purpose of lesseningthe friction when the bolt comes in contact with the keeper, and isforced back into the lock, in closing the door, and also for the purposeof making the lock reversible, so that it may be used on a door opening`either to the right hand, or to the left, the interior of the lock beingof any well known construction.

To enable others skilled in the art to make, and use, my invention, Iwill proceed to describe the same with reference to the drawings.

A represents a mortise lock, which is furnished with the usualappliances of knob, shank, key, &c.

The latch bolt (B) is a vertical bar having upon its upper surface aprojecting pin (c) reaching through, and forming the axis, or journal,of the horizontal roller (E), which roller, together with the verticalbar forms a sort of T shaped bolt as shown in the drawings.

D, is the keeper for this lock, and is a simple plate secured to theframe or casings of the door having openings corresponding to the shapeor forni of the ends of the bolts of the lock.

In closing a door, having a lock, fur nished with a latch bolt of thisdescription, the roller (E) (only) comes in contact with the keeper7 andforces the bolt back into the lock, until it comes opposite the openingin the keeper, into which it is then driven by the spring connect-edwith the bolts. In this position the bolt is retained by the verticalbar (b) bearing squarely against the keeper, so that the door cannot beopened, until the bolt is drawn back by the knob, or shank, to which itis attached.

This latch bolt may be applied to a niortise lock or to a rim (oroutside) lock and used on a door opening either to the right hand or tothe left without changing any of its parts and just as it connes fromthe factory.

Having thus fully described the nature and objects of my invention whatI claim as new and desire to secure by Letters Patent is- Combining theroller (E) with the latch bolt (B) for the purpose of lessening thefriction when forcing the bolt back into the lock, substantially asshown and described.

JACOB KINZER.

Vitnesses W. B. COPELAND, N. M. MoDowELL.

